The data on the following page represent the carbon dioxide emissions from the consumption of energy per capita (total carbon dioxide emissions, in tons, divided by total population) for the countries of Europe in 2008.
(a) Determine and interpret the quartiles.
(b) Is the observation corresponding to Albania, 1.31, an outlier?

1.31 5.38 10.36 5.73 3.57 5.40 6.24 8.59 9.46 6.48 11.06 7.94 4.63 6.12 14.87 9.94 10.06 0.71 5.86 6.93 3.58 4.09 9.91 161.57 7.82 8.70 8.33 9.38 7.31 16.75 9.95 23.87 7.76 8.86